Quick answer
Use 1080 x 1350 pixels for a portrait Instagram feed image, 1080 x 1080 for a square, and 1080 x 1920 for Stories and vertical Reel artwork. Treat these as production canvases. The final crop can change by surface, grid preview, device, and publishing path.
Source check: August 28, 2026. Platform apps, APIs, account types, and third-party publishers can change on different schedules. The final operational check is the preview and public result in the exact path you use.
At a glance
| Surface or choice | Size or limit | Ratio or source | What it means |
|---|---|---|---|
| Portrait feed post | 1080 x 1350 | 4:5 | Uses more vertical feed space |
| Square feed post | 1080 x 1080 | 1:1 | Reliable mixed-format fallback |
| Story or Reel canvas | 1080 x 1920 | 9:16 | Leave interface-safe margins |
| Profile source | At least 400 x 400 | 1:1 | Design for a circular crop |
| Landscape working canvas | 1080 x 566 | About 1.91:1 | Check the current composer preview |
What this page owns
Feed crops, profile crops, Story overlays, and Reel previews are different design problems. Do not place a phone number, price, face, or logo at an edge merely because the source file accepts it.
That ownership boundary matters. Boomp uses one clear page for each search job instead of publishing near-duplicate pages that give different answers to the same question.
A dependable production method
- Use one aspect ratio throughout a carousel unless the composer proves otherwise.
- Check the profile-grid preview as well as the full post.
- Keep Story and Reel text clear of the top and bottom controls.
- Use JPEG for photographs and PNG when crisp flat graphics need it.
- Review the published crop on a phone.
The last check matters most. A design file, successful export, scheduler acceptance, or API response does not prove that the customer-facing artifact is correct.
Size is only one acceptance test
A technically valid file can still fail the business. Check these questions with the final media and caption together:
- Is every name, date, price, claim, location, and link current?
- Does the crop preserve the subject and the useful words?
- Are captions, contrast, and text alternatives sufficient for the content?
- Does the business have permission to use the people, customer material, music, footage, and marks shown?
- Does the call to action match the destination and what happens next?
- Did a responsible person approve this exact version?
For the full release gate, use the social media content quality checklist.
Where Boomp fits
Boomp fits when the recurring problem is larger than one pixel count. The free first look starts with a public website and returns ten finished posts, with images, a carousel and a short video, before asking for an account or a card. They are the software's reading of the public site and do not prove that Boomp knows the owner's voice. Publishing and the recurring month belong to the paid plans. Finished media and posts belong to paid work, with the customer's approval settings controlling what represents the business.
See ten finished posts made from your website, free.
Related guides
- Instagram Reel Size 2026: Dimensions, Ratio and Safe Layout
- Instagram Carousel Size 2026: Portrait, Square and Crop Rules
- Social Media Safe Zones 2026: Keep Text and Logos Visible
- Social Media Alt Text Guide: Write Useful Image Descriptions
